摘要
建立了变系数非线性时滞Smith方程dN(t)dt =r(t)N(t) k-N(t-τ(t) )k+R(t)N(t-τ(t) )关于平衡态k振动的充分条件 .
The oscillation of delay Smith differential equation with variable coefficient dN(t)dt=r(t)N(t)k-N(t-τ(t))k+R(t)N(t-τ(t))was studied in this paper.A sufficient condition about balanced state k oscillation is obtained.
出处
《纺织高校基础科学学报》
CAS
2000年第1期33-36,共4页
Basic Sciences Journal of Textile Universities
关键词
时滞微分方程
振动
正解
变系数方程
delay differential equation
oscillation
positive solution
